THE EFFECT OF SMOKE FROM CHARCOAL KILNS ON SOIL RESPIRATION

摘要

The objective of the work was a laboratory examination of the effects ofa water-souble fraction of the smoke, emitted during charcoaling by dry distillation, on soil metabolism. The experimental soil was exposed to smoke for ten years and the control soil was taken from a site not exposed to smoke. Oxygen uptake and carbondioxide evolution were measrued in soil samples by using the mehtod of volumetric respirometry. When an aqueous smoke solution was added to the soil, the rte of oxygen metabolism increased by a factor 15 for the experimental soil and by a factor 5 for the control soil.